Phosphorus trichloride
An inorganic compound, Cl3P, 137.333 g/mol. Boiling point 76.1 °C, melting point -93.6 °C, as published.
Identifiers
- Molecular formula
- Cl₃P
- Molecular weight
- 137.333 g/mol
- Exact mass
- 135.88032 g/mol
- IUPAC name
- trichlorophosphane
- ClP(Cl)Cl
- InChI=1S/Cl3P/c1-4(2)3
- FAIAAWCVCHQXDN-UHFFFAOYSA-N
Measured properties
- Boiling Point
- 169 °F at 760 mmHg (EPA, 1998)
- 76.1 °C
- Melting Point
- -170 °F (EPA, 1998)
- -93.6 °C
- Density
- 1.574 at 69.8 °F (EPA, 1998) - Denser than water; will sink
- 1.574 at 21 °C
- Solubility
- Reacts with water (NIOSH, 2024)
- Reacts with water, ethanol; soluble in benzene, chloroform, ether
- Vapor Pressure
- 100 mmHg at 69.8 °F (EPA, 1998)
- 120.0 [mmHg]
- Viscosity
- 0.65 cP at 0 °C; 0.438 cP at 50 °C
- Refractive Index
- Index of refraction: 1.5122 at 21 °C
Calculated properties
- Molecular weight
- 137.33 g/mol
- Exact mass
- 135.88032 Da
- XLogP3
- 2.3
- Polar surface area
- 0 Ų
- Complexity
- 8
- H-bond donors
- 0
- H-bond acceptors
- 0
- logP
- 2.9297
- Topological polar surface area
- 0 Ų
- H-bond donors
- 0
- H-bond acceptors
- 0
- Rotatable bonds
- 0
- Molar refractivity
- 24.479 cm³/mol
- Fraction sp³ carbons
- 0
- QED drug-likeness
- 0.4503
What it is made of
Elements
Structure
- Heavy atoms, hydrogen excluded
- 4
- Total atoms, hydrogen included
- 4
- Rings
- 0
- Aromatic rings
- 0
- Stereocentres
- 0
- Formal charge
- 0
The molecule in three dimensions
The drawing above is a diagram of what is bonded to what. A molecule is not flat, and the model here is one low-energy shape generated from the connectivity — useful for seeing which groups can reach each other, and not a measured structure. A real sample is a population of conformations, interconverting.
Reactions it appears in
Other names for it
The systematic name on this record is trichlorophosphane.
The sources also call it Trichlorophosphine, Phosphorous trichloride, Phosphorous chloride, Phosphine, trichloro-, Fosfortrichloride, Phosphortrichlorid, Trojchlorek fosforu, Phosphorus chloride (PCl3), Phosphorus chloride (Cl6P2), Fosforo(tricloruro di), Phosphore(trichlorure de).
Structurally related
Seen alongside it in reaction records
Molecules that appear in the same recorded reactions as Phosphorus trichloride. This says nothing about structure: most of them are the bases, solvents, ligands and catalysts the chemistry needed, and they are here because somebody put them in the same flask.
1,2-Dichloroethane
used as a reactant
C₂H₄Cl₂, 98.96 g/mol.
1,4-Dihydroxy-2,2,6,6-tetramethylpiperidine
used as a reactant
C₉H₁₉NO₂, 173.256 g/mol.
1,1-Dichloroethane
used as a reactant
C₂H₄Cl₂, 98.96 g/mol.
(3,4-Dichlorophenyl){2-[3-(phenylmethoxy)phenyl]ethyl}amine
used as a reactant
C₂₁H₁₉Cl₂NO, 372.295 g/mol.
Where these values came from
chemistry engine
What this page does not claim
Identifiers are copied from the source record, measured values are reported as published, and calculated values are marked as calculated. Nothing here is a hazard, purity or handling assessment — how the library is checked.
Where to next
More molecules under P
The rest of this shelf, a hundred names at a time.
Molar mass calculator
Work with Cl3P in a calculation, with every element's contribution shown.
Molarity calculator
Grams of Phosphorus trichloride for a volume and a concentration, or the concentration a mass gives.
Open in ReactionLens
The full record in the workstation: every atom, every bond, and the reactions it appears in.